Pyongyang has nullified the 1953 armistice that ended the Korean War, also cutting a communication hotline with the South on Monday. US-South Korean military drills and fresh UN sanctions against North Korea were cited as reasons for the move.

The Korean armistice agreement has been “scrapped
completely,” North Korea’s ruling party official newspaper said
on Monday, citing a senior military spokesman.

There was no formal announcement confirming the report, nor has
the North Korean government openly declared its hotline with the
South cut.

But according to Seoul’s Unification Ministry, attempts to
contact the North by telephone at 9am failed. The hotline is used
to communicate between Seoul and Pyongyang, which do not have
diplomatic relations.

The news comes after the communist state said last week it was
ending all non-aggression pacts with South Korea and threatened to
sever a hotline with UN forces in the South, at the border truce
village of Pammunjom.

On Sunday Pyongyang threatened all-out nuclear war with the US
and South Korea as the two countries started joint military drills
on Monday. The military exercise involves 10,000 South Korean and
3,500 American troops and will continue until the end of April.

"Our front-line military groups, the army, the navy and the
air force, the anti-aircraft units and the strategic rocket units,
who have entered the final all-out war stage, are awaiting the
final order to strike," Yonhap reported, quoting North Korean
media.

North Korean government has repeatedly asked for the
South-Korea-US drills to be halted, claiming they are a preparation
for invasion. Pyongyang wants security guarantees and US troops to
be removed from South Korea.

North Korea’s demands also include its recognition as a nuclear
weapons state and direct talks with Washington. However, the Obama
administration views such demands as contradictory.

“The United States will not accept North Korea as a nuclear
state,” the US president’s national security adviser Tom
Donilon said on Monday, adding that his country won’t “stand by
while it seeks to develop a nuclear-armed missile that can target
the United States.”

Washington is willing to negotiate with North Korea, but only if
it takes some “meaningful steps” to meet international
obligations first, the US senior official said.

On Friday, the UN Security Council adopted a resolution
expanding sanctions against North Korea tightening financial
restrictions and cargo inspections against Pyongyang. The document,
drafted by the US and China, was a response to Pyongyang's third
nuclear test.

The resolution passed by the UN Security Council on Friday is the
fifth of its kind since 2006, when the Democratic People's Republic
of Korea (DPRK) conducted its first nuclear test.